EP 1050977 B1 20121107 - Power control system using acknowledgements
Title (en)
Power control system using acknowledgements
Title (de)
Sendeleistungsregelungssystem unter Verwendung von Rückquittierungsnachrichten
Title (fr)
Système de commande de puissance de transmission utilisant des messages d'accusé de réception
Publication
Application
Priority
US 30608499 A 19990506
Abstract (en)
[origin: EP1050977A2] A power control system for a wireless communications system adjusts the transmit power of a wireless transmitter in relation to a number of acknowledgments expected for radio transmissions over a wireless link. For example, a wireless unit monitors the number of acknowledgments it receives (or fails to receive) for radio packets that the wireless unit transmitted over the wireless link. The wireless unit determines the number of acknowledgments lost in relation to the number of acknowledgments expected to be received by the wireless unit. The number of acknowledgments expected by the wireless unit can be based on the number of radio packets transmitted by the wireless unit. If the number of ACKS lost/ number of ACKs expected is greater than a first threshold, the wireless unit increases the transmit power level. If the number of ACKs lost/ the number of ACKs expected is below a second threshold, the wireless unit decreases the transmit power level.
IPC 8 full level
H04B 7/005 (2006.01); H04B 7/26 (2006.01); H04L 12/28 (2006.01); H04L 29/08 (2006.01)
CPC (source: EP KR US)
H04W 52/08 (2013.01 - EP US); H04W 52/48 (2013.01 - KR); H04W 52/20 (2013.01 - EP US); H04W 52/50 (2013.01 - EP US)
Designated contracting state (EPC)
DE FI FR GB SE
DOCDB simple family (publication)
EP 1050977 A2 20001108; EP 1050977 A3 20030528; EP 1050977 B1 20121107; AU 3131900 A 20001109; BR 0002134 A 20010313; CA 2306178 A1 20001106; JP 2001007764 A 20010112; JP 2006254505 A 20060921; JP 4445490 B2 20100407; KR 100560881 B1 20060313; KR 20000077141 A 20001226; US 2005239491 A1 20051027; US 7450522 B2 20081111
DOCDB simple family (application)
EP 00303279 A 20000418; AU 3131900 A 20000503; BR 0002134 A 20000427; CA 2306178 A 20000419; JP 2000132828 A 20000501; JP 2006159337 A 20060608; KR 20000023674 A 20000503; US 16991905 A 20050630